13th Edition

ISBN: 9781305881884

Author: Anderson

Publisher: CENGAGE L

Concept explainers

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.

Videos

Textbook Question

Chapter 4.1, Problem 11E

The National Occupant Protection Use Survey (NOPUS) was conducted to provide probability-based data on motorcycle helmet use in the United States. The survey was conducted by sending observers to randomly selected roadway sites where they collected data on motorcycle helmet use, including the number of motorcyclists wearing a Department of Transportation (DOT)-compliant helmet (National Highway Traffic Safety Administration website, January 7, 2010). Sample data consistent with the most recent NOPUS are shown below.

Chapter 4.1, Problem 11E, The National Occupant Protection Use Survey (NOPUS) was conducted to provide probability-based data

a. Use the sample data to compute an estimate of the probability that a motorcyclist wears a DOT-compliant helmet.
b. The probability that a motorcyclist wore a DOT-compliant helmet five years ago was .48, and last year this probability was .63. Would the National Highway Traffic Safety Administration be pleased with the most recent survey results?
c. What is the probability of DOT-compliant helmet use by region of the country? What region has the highest probability of DOT-compliant helmet use?

Expert Solution & Answer

Chapter 4 Solutions

STATISTICS F/BUSINESS+ECONOMICS-TEXT

Ch. 4.1 - An experiment has three steps with three outcomes...Ch. 4.1 - How many ways can three items be selected from a...Ch. 4.1 - How many permutations of three items can be...Ch. 4.1 - Consider the experiment of tossing a coin three...Ch. 4.1 - Suppose an experiment has five equally likely...Ch. 4.1 - An experiment with three outcomes has been...Ch. 4.1 - A decision maker subjectively assigned the...Ch. 4.1 - In the city of Milford, applications for zoning...Ch. 4.1 - Simple random sampling uses a sample of size n...Ch. 4.1 - The following table shows the percentage of...

Ch. 4.1 - The National Occupant Protection Use Survey...Ch. 4.1 - The Powerball lottery is played twice each week in...Ch. 4.1 - A company that manufactures toothpaste is studying...Ch. 4.2 - An experiment has four equally likely outcomes:...Ch. 4.2 - Consider the experiment of selecting a playing...Ch. 4.2 - Consider the experiment of rolling a pair of dice....Ch. 4.2 - Refer to the KPL sample points and sample point...Ch. 4.2 - Fortune magazine publishes an annual list of the...Ch. 4.2 - Do you think global warming will have an impact on...Ch. 4.2 - Junior Achievement USA and the Allstate Foundation...Ch. 4.2 - Data on U.S. work-related fatalities by cause...Ch. 4.3 - Suppose that we have a sample space with five...Ch. 4.3 - Suppose that we have a sample space S = {E1, E2,...Ch. 4.3 - Clarkson University surveyed alumni to learn more...Ch. 4.3 - The Eco Pulse survey from the marketing...Ch. 4.3 - Information about mutual funds provided by...Ch. 4.3 - What NCAA college basketball conferences have the...Ch. 4.3 - A survey of magazine subscribers showed that 45.8%...Ch. 4.3 - High school seniors with strong academic records...Ch. 4.4 - Suppose that we have two events, A and B, with...Ch. 4.4 - Assume that we have two events, A and B, that are...Ch. 4.4 - The automobile industry sold 657,000 vehicles in...Ch. 4.4 - Students taking the Graduate Management Admissions...Ch. 4.4 - The bureau of Transportation Statistics reports...Ch. 4.4 - To better understand how husbands and wives feel...Ch. 4.4 - Jamal Crawford of the National Basketball...Ch. 4.4 - A joint survey by Parade magazine and Yahoo! found...Ch. 4.4 - The Institute for Higher Education Policy, a...Ch. 4.5 - The prior probabilities for events A1 and A2 are...Ch. 4.5 - The prior probabilities for events A1, A2, and A3...Ch. 4.5 - A consulting firm submitted a bid for a large...Ch. 4.5 - A local bank reviewed its credit card policy with...Ch. 4.5 - In August 2012, tropical storm Isaac formed in the...Ch. 4.5 - ParFore created a website to market golf equipment...Ch. 4.5 - The percentage of adult users of the Internet who...Ch. 4 - A survey of adults aged 18 and older conducted by...Ch. 4 - A financial manager made two new investmentsone in...Ch. 4 - Forty-three percent of Americans use social media...Ch. 4 - A study of 31,000 hospital admissions in New York...Ch. 4 - A telephone survey to determine viewer response to...Ch. 4 - The U.S. Census Bureau serves as the leading...Ch. 4 - An MBA new-matriculants survey provided the...Ch. 4 - Refer again to the data from the MBA...Ch. 4 - In February 2012, the Pew Internet American Life...Ch. 4 - A large consumer goods company ran a television...Ch. 4 - Cooper Realty is a small real estate company...Ch. 4 - A company studied the number of lost-time...Ch. 4 - According to the Open Doors Report, 9.5% of all...Ch. 4 - An oil company purchased an option on land in...Ch. 4 - The five most common words appearing in spam...

Knowledge Booster

$Statistics$

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.

Solution Summary: The author explains how a survey is conducted to provide probability-based data on motorcycle helmets used in the United States.

Concept explainers

Videos

Chapter 4 Solutions